You can't fully turn off the PFET in this application since the intrinsic body diode allows current to flow
from the battery to the rig.? You could add a second PFET in series with this one?
but this time have the source pin facing the battery, yank the gate down toward ground to turn it on
but be careful to avoid exceeding the Vgs spec..
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On Tue, Sep 6, 2022 at 06:58 AM, Max wrote:
I'm curious if a switch could be added to this circuit to turn it on and off? Or better still, could it be controlled via 3.3v or 5v logic with a few extra parts?
?
I need an electronic switch and the added protection sure would be nice. Add in a 1.5KE15A 15-volt transient suppressor diode and a fuse and you have over voltage protection as well.?
?
Max KG4PID
